Gear actuated wrench



April5,149. B. H. LYBYER I 2,466,456

GEAR ACTUATED WRENCH Filed July 19, 1945 Inventor e amm H- L 1%5187 M tomeys Patented Apr. 5, 1949 UNI-TED STATES PATENT or ies Bend'amin H. Lyliyer, Casper; W'yo., assignor of fifity per cent. ta- Wayne M'. Roberts; Ad'a, Okla.

Application. July 1.9, 1945,' Serial No. 605,873

(01. S l -5'7) v 2 Claims. 1..

This invention relates to improvements in Wrenches and has for an object to provide a gear actuated wrench.

Another object of my invention is to provide a crank actuated gear drive wrench.

A further object of this invention is to provide a chain driven wrench.

A still further object of the invention is to provide a wrench which may be used in close spaces where other wrenches cannot be operated.

Other features and advantages will become more readily apparent from the following description and the accompanying illustrative drawings in which:

Figure 1 is an elevational view partly in section of my wrench,

Figure 2 is another similar view thereof, taken from a different angle,

Figure 3 is a side elevational view of a modification,

Figure 4 is another elevational view thereof,

Figure 5 is a detail view of a crank' handle therefor, and

Figure 6 is a detail of a socket wrench plug.

In the specification to follow and in the several views in the drawings like reference characters indicate like parts throughout and in which l and II, indicate two forms respectively of my improved wrench and in form I0, I provid a housing l2, consisting of two longitudinal sections l3 and I4, each having a semi-cylindrical channel I and I6, which when these members are connected and secured together form a cylindrical bore ll, through which extends a cylindrical shaft l8, the lower end I9 of which is enlarged in diameter and is provided with integral threads to form a worm 20.

The upper end 2-1, (shown dotted) is squared and fits into a similar opening in the crank handle 22, wherein it is held by a screw 23, also shown dotted. Below the handle and encompassing the upper ends 24 and 25, of the sections l3 and I4, is a thimble 26. A Weighted end 21, is provided on the shank end 28, opposite the handle 29, is provided for balancing and facilitating the turning of the handle 22. The thimble 26, together with a slidabl collar 30. on the member l2, coact to hold said sections 2 and I3, secured together. However, upon removal of the thimble and collar the device automatically becomes disassembled. The member l2, tapers from top to bottom end.

The said members l3 and I4, both terminate in inclined outwardly spaced walls 3| and 32, between which is mounted a worm gear 33, provi'ded with a rectangular aperture 3'4, aligning with larger cylindrical bores 35 and 36, through said walls 3| and 32. The aperture 34, is adapted to receive the shank 31, of a socket wrench plug 38, the latter being provided with a spring pressed ball 39, to seat in a provided recess, in the socket wrench. Ball bearings 39", (shown dotted) are provided for the upper and lower ends of the shaft 8.

In Figures 3 to 5, I show a modification of the above described wrench which consists of a pair of spaced plates 40 and 4|, connected by spacers 4.2 and 43, and screws 44 and 45. These plates terminate at their outer ends 46 and 41, in handholds 48' and 49, between which may be provided a filler if desired.

Mounted between said upper ends 46 and 41, of the plates 40 and 4|, is a sprocket wheel 48, and between the lower ends 49 and 50 of the plates is another sprocket wheel 5|, over which wheels is trained a sprocket chain 52. Both of the wheels 48 and 5|, are provided with square apertures 53 and 54, respectively, the former to receive the square shank 55, of a crank 56, provided with a handle 51, and by which the wheel 48, is turned. The crank 56, is freely removable to save space in a tool box. The aperture 54, is to receive the shank 31 of the socket wrench driver 38.

It is thought that persons skilled in the art I to which the invention relates will be able to obtain a clear understanding of the invention after considering the description in connection with the drawings. Therefore, a more lengthy description is regarded as unnecessary.

Changes in shape, size and rearrangement of details and parts such as come within the purview of the invention claimed may be resorted to, in actual practice, if desired.

Having now described my invention that which I claim as new and desire to secure by Letters Patent is:

1. A wrench of the kind described, comprising a pair of complementary cylinder forming members, each of said members having an externally and longitudinally tapered portion, a shank rotatable therein and terminating in a worm, complementary bearings projecting from one pair of corresponding ends of said members and a worm gear mounted therein having a socket, the tapered portion increasing in size toward said ends, means for securing said members together comprising a thimble mounted on the upper end of the members and a slidable collar on said members and shaped to co-act with the tapered portion for temporarily holding the members together, allowing quick manual assembly and disassembly of the wrench.

2. A wrench of the kind described, comprising a pair of complementary cylinder forming members, each of said members having an externally and longitudinally tapered portion, a shank rotatable therein and terminating in a worm, complementary bearings projecting from one pair of corresponding ends of said members and a worm gear mounted therein having a, socket, the tapered portion increasing in size toward said ends, other bearings associated with said shank and adapted to be carried therewith when the wrench is disassembled, means for securing said members together, and said means comprising a thimble mounted on the upper end of the members and a slidable collar on said members and shaped to co-act with the tapered portion for temporarily holding the members together, allowing BENJAMIN H. LYBYER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 685,544 Weimar Oct. 29, 1901 1,072,079 Bellows Sept. 2, 1913 1,263,435 Klingbiel Apr. 23, 1918 1,294,552 Smith Feb. 18, 1919 1,344,265 Doonar June 22, 1920 1,378,719 Poole May 17, 1921 1,477,448 Roberts Dec. 11, 1923 1,648,134 Kientz Nov. 8, 1927 1,795,150 Slazes Mar. 8, 1931 

